It should be GB9684, GB is the "national standard". 304 stainless steel is based on the GB9684 executive standard production.
GB9684 executive standard, 304 is a material of stainless steel, stainless steel material is very much, such as 304,, 321, 316, 347, 310s, 904L, etc., as long as these materials of stainless steel in accordance with the GB9684 standard implementation of the production and processing, can be used as a food-grade stainless steel, it should be said that in accordance with the implementation of the standard! GB9684 production and processing out of 304 is food grade stainless steel
304 stainless steel is a common material in the stainless steel, density 7.93 g/cm3, the industry is also called 18/8 stainless steel. High temperature resistance of 800 degrees, with good processing performance, high toughness, widely used in industry and furniture decoration industry and food medical industry.
The common labeling methods in the market are 06Cr19Ni10, SUS304, of which 06Cr19Ni10 generally indicates that the national standard production, generally indicates that the ASTM standard production, SUS 304 indicates that the Japanese standard production.
304 is a general-purpose stainless steel, which is widely used in the production of equipment and machine parts requiring good overall performance (corrosion resistance and molding). In order to maintain the corrosion resistance inherent in stainless steel, the steel must contain more than 18% chromium, more than 8% nickel content. 304 stainless steel is a grade of stainless steel produced in accordance with the American ASTM standard.
What is the difference between 201 stainless steel and 304 stainless steel?Like those 201 202 304 316 316L just foreign stainless steel grades in the domestic grades is to refer to the composition of the chemical elements they do not pass, there is only one point, the amount of nickel does not pass 201 1 nickel 3 nickel 201H is 5 nickel 202 in fact, with the same as the 201H contains a 5 nickel 304 is generally said to be 8-12 nickel, in fact, in the country only 8 nickel 304H, except 316 is 12 nickel. Except 316 is 12 nickel in addition to 2 Mo 316L has 14 nickel, the same has 2 Mo basically these. Price, certainly the higher the nickel content point is more expensive. Due to the instability of the domestic steel market, the price is not easy to say
304 stainless steel and 08 stainless steel what is the difference1, 304 steel and 304 stainless steel is a meaning.
2, 304 stainless steel is a common material in stainless steel, density 7.93 g/cm3, the industry is also called 18/8 stainless steel. High temperature resistance of 800 degrees, with good processing performance, high toughness, widely used in industry and furniture decoration industry and food medical industry. The common labeling methods on the market are 00Cr19Ni10, SUS304, of which 00Cr19Ni10 generally indicates the national standard production, generally indicates the ASTM standard production, SUS 304 indicates the Japanese standard production. 304 is a general-purpose stainless steel, which is widely used in the production of equipment and machine parts that require good comprehensive performance (corrosion resistance and formability). In order to maintain the corrosion resistance inherent in stainless steel, the steel must contain more than 18% chromium, more than 8% nickel content. 304 stainless steel is produced in accordance with the U.S. ASTM standard stainless steel grade.
What is the difference between 304 stainless steel and 316 stainless steel?316 and 304 in the chemical composition: 316 contains Mo, 304 does not contain Mo. Mo's role is a carbonizing agent to prevent the steel from becoming brittle. General 316 for naval steel, used in the sea more. In a concentrated sulfuric acid environment: do not use 316!
304 stainless steel: is a general-purpose stainless steel material. High temperature resistance is also better, the general use of the temperature limit is less than 650 ℃. 304 stainless steel has excellent stainless steel corrosion resistance and good resistance to intergranular corrosion.
316 stainless steel: 18Cr-12Ni-2.5Mo due to the addition of Mo, so its corrosion resistance, atmospheric corrosion resistance and high temperature strength is particularly good, can be used in harsh conditions; work hardening excellent (non-magnetic).
304 stainless steel is a common material in stainless steel, density 7.93g/cm3, the industry is also called 18/8 stainless steel. High temperature resistance of 800 degrees, with good processing performance, high toughness, widely used in industry and furniture decoration industry and food medical industry. The common labeling methods on the market are 06Cr19Ni10, SUS304, of which 06Cr19Ni10 generally indicates that the national standard production, 304 generally indicates that the ASTM standard production, SUS304 indicates that the Japanese standard production.
304 is a general-purpose stainless steel, which is widely used in the production of equipment and machine parts requiring good overall performance (corrosion resistance and molding). In order to maintain the corrosion resistance inherent in stainless steel, the steel must contain more than 18% chromium and more than 8% nickel. 304 stainless steel is a grade of stainless steel produced in accordance with the American ASTM standard.
316 stainless steel is a stainless steel, due to the addition of Mo elements, so that its corrosion resistance, and high-temperature strength has been greatly improved, high temperature resistance can reach 1200-1300 degrees, can be used in harsh conditions. The main uses are pulp and paper with equipment heat exchangers, dyeing equipment, film flushing equipment, pipelines, coastal areas of the exterior of the building with materials. 2013 is also used in the field of solenoid valves, mainly used in the shell, clamps, ball, valve body, seat, nut, stem and so on.
304 stainless steel is one of the most widely used chromium - nickel stainless steel, as a widely used steel, has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; stamping, bending and other hot workability is good, no heat treatment hardening phenomenon (use of the temperature -196 ℃ ~ 800 ℃). Resistant to corrosion in the atmosphere, if it is an industrial atmosphere or heavily polluted area, it needs to be cleaned in time to avoid corrosion. Suitable for food processing, storage and transportation. Has good processing performance and weldability. Plate heat exchanger, bellows, household goods (1, 2 types of cutlery, cabinets, indoor plumbing, water heaters, boilers, bathtubs), automotive parts (windshield wipers, mufflers, molded products), medical appliances, building materials, chemical, food industry, agriculture, ship parts, etc. 304 stainless steel is a nationally recognized food-grade stainless steel.
Most of the use requirements are long-term to maintain the original appearance of the building. In determining the type of stainless steel to be selected, the main considerations are the required aesthetic standards, the location of the corrosive nature of the atmosphere and the cleaning system to be used. However, other applications are increasingly just looking for structural integrity or impermeability. Examples include roofs and side walls of industrial buildings. In these applications, the owner's construction costs may be more important than aesthetics, and it is OK for the surface not to be very clean. The use of 304 stainless steel works quite well in dry indoor environments. However, to maintain its appearance outdoors in rural and urban areas, it needs to be cleaned frequently. In heavily polluted industrial and coastal areas, the surface can be very dirty and even rusty.
But to get the aesthetic effect in the outdoor environment, nickel-containing stainless steel is required. Therefore, 304 stainless steel is widely used for curtain walls, side walls, roofs and other architectural uses, but in the seriously aggressive industrial or marine atmosphere, it is best to use 316 stainless steel. Stainless steel sliding doors, the superiority of using stainless steel in structural applications has been well recognized. Several design guidelines include 304 and 316 stainless steel. Because the "duplex" stainless steel 2205 has good atmospheric corrosion resistance and high tensile and elastic strength in one, so the European guidelines also include this steel. In practice, stainless steel is manufactured in all standard metal shapes and sizes, and in many specialized shapes. The most commonly used products are made from sheet and strip, but also medium and thick plates are used to produce special products, for example, the production of hot-rolled structural sections and extruded structural sections. And there are also round, oval, square, rectangular and hexagonal welded or seamless steel tubes and other forms of products, including profiles, bars, wires and castings.
What is the difference between 316 stainless steel and 304 stainless steelThe main difference is the nickel content, the standard 304 stainless steel contains 8% nickel content, 316 stainless steel has 11% nickel content, the price of stainless steel is mainly affected by the nickel content, the higher the nickel content, the higher the unit price
What is the difference between 304 stainless steel and 301 stainless steel
304 is a general-purpose stainless steel that is widely used to make equipment and machine parts that require good all-around performance (corrosion resistance and formability).
301 stainless steel exhibits significant work hardening during deformation and is used in a variety of applications requiring higher strength.
301 material compared with 304 steel, C content is more, Cr, Ni content is less, cold working tensile strength and hardness increase, non-magnetic, but after cold working magnetic.
The difference between stainless steel 301 and 304:
1, 301 national standard standard 1Cr17Ni7; 304 national standard standard 0Cr18Ni9
2, 304 is a general-purpose stainless steel, it is widely used in the production of requirements for a good combination of performance (corrosion resistance and molding) of equipment and machinery; 301 stainless steel in deformation presents a 301 stainless steel in the deformation of the phenomenon of work hardening, is used for a variety of occasions requiring high strength.
3, 301 material compared with 304 steel, C content, Cr, Ni content is less, cold working tensile strength and hardness increase, non-magnetic, but after cold working magnetic.
Sanitary stainless steel welded pipe (welded sanitary stainless steel pipe, stainless steel pipe within the leveling welded pipe) Welded sanitary stainless steel pipe production process: sanitary welded pipe (billet) production process: steel coil a longitudinal shear slitting a molding an automatic weld an external weld grinding a weld channel leveling an internal (on-line solution treatment / on-line bright annealing) an eddy current flaw detection a cooling a certain size of a fixed end of the repair of the flat mouth of a flying saw cut off<
After cutting the stainless steel welded pipe for the following three processes:
(1) welded pipe by straightening a flat head a hydrostatic a test a packaging a warehouse (welded industrial billet process);
(2) heat-treated welded pipe by degreasing a bright heat treatment a straightening an ultrasonic flaw detection a flat head a hydrostatic a test a packaging a warehouse (seamless industrial welded pipe process);
(3) welded pipe by degreasing a bright heat treatment a straightening an ultrasonic flaw detection a flat head a hydrostatic a test a packaging a warehouse (seamless industrial welded pipe process);
(3) polished welded pipe by degreasing an internal polishing an external polishing a test a packaging a warehouse (sanitary welded pipe production process);
Sanitary welded pipe stock management
1, the length of sanitary welded pipe stock 6 meters
2, the stock inventory retained amount of about 300 tons
3, retained stock are all internal and external polishing, woven bag packing sanitary welded pipe, and the length of the stock is 6 meters
4, the stock is about 300 tons
5, the stock is all internal and external polishing, woven bag packing sanitary welded pipe. All of the stock are polished inside and outside, and the sanitary stainless steel pipes packed in woven bags
4, the implementation of standards: "GB/T12771-2008 stainless steel welded steel pipe for fluid transportation" Common specifications of the retained stock: Sanitary welded pipe applications:
A) Pharmaceutical conduit, food fluid pipe, beer delivery pipe, drinking water, beverage and other industries
B) Bioengineering fluid tube, chemical engineering, pharmaceutical engineering conduit, automotive parts conduit
C) air purification and transportation, aviation, seawater desalination equipment conduit, etc.
D) food machinery factories, engine factories, chemical machinery factories, refrigeration machinery factories, etc.
E) medical machinery and equipment manufacturers, hydraulic equipment factories, vacuum equipment factories, etc.
F) ultra-high purity Gas equipment and robot cylinder body. Pneumatic components, cylinder liner, electric appliances
G) sanitary welded pipe is mainly used as a product of the fluid pipe or high-end decorative pipe. This is in accordance with the yield strength of 301 stainless steel material division. In order to facilitate understanding, first look at the connotation of yield strength.
Yield strength: is the yield limit of the metal material yield phenomenon occurs, that is, to resist the stress of trace plastic deformation. An external force greater than this limit will cause the part to fail permanently and irrecoverably.
Soft, 1/2 hardness, 3/4 hardness, and full hardness are related to the annealing temperature of the material.
The difference between stainless steel 301 and 304:
1, 301 national standard standard 1Cr17Ni7; 304 national standard standard 0Cr18Ni9
2, 304 is a general-purpose stainless steel, it is widely used in the production of equipment and machine parts that require a good combination of performance (corrosion resistance and molding); 301 stainless steel in the shape of the transformation presents a Obvious work hardening phenomenon, is used in a variety of occasions requiring high strength.
3, 301 material compared with 304 steel, more C content, Cr, Ni content is less, cold working tensile strength and hardness increase, non-magnetic, but after cold working magnetic.
433 What is the difference between stainless steel and 304 stainless steelStainless steel 443 is a kind of ferritic stainless steel, which is now generally used to replace 304, rust resistance and processing performance is comparable to 304, and is now fully promoted in the field of electrical appliances, utensils, kitchen equipment, elevators, and oven making.
1. Excellent corrosion resistance: (1) chromium content increased to 21%,, with the same excellent corrosion resistance as SUS304.
(2) added titanium has a stabilizing effect, welded can also maintain good corrosion resistance
Material properties than ordinary ferritic stainless steel: 443 stainless steel through the increase of Cr, reduce C, add Ti to improve corrosion resistance. Improvement of pitting resistance: increase the content of Cr to improve the corrosion resistance of the stainless steel matrix, increase Ti to improve its pitting resistance. the increase in Cr content, improve the electrode potential of the stainless steel matrix, while Ti in stainless steel preferentially with C to form stable compounds, inhibit the stainless steel C and Cr synthesis, inhibit the emergence of Cr-poor points, improve its pitting resistance. Improvement of thermal service life: Ti elements preferentially form C compounds, inhibit the enrichment of stainless steel in the heat conditions of C to the grain boundaries, improve the thermal service life of stainless steel, while improving the resistance of stainless steel to intergranular corrosion, improve the thermal stability of stainless steel
2, stainless steel 443 of the chemical composition and mechanical properties of the indicators: Carbon 〔C〕 = 0.009%, Chromium [Cr〕 = 21.02%, Chromium [Cr] = 0.009%, Cr [Cr] = 0.009%, Chrome [Cr] = 1.01%. 21.02%, antimony [Ti] = 0.18%, yield strength of σ0.2 ≥ 250Mpa, tensile strength σb ≥ 450Mpa, elongation El ≥ 25
3, the price advantage and its stability (1) because there is no need to add nickel, so the price is cheaper than SUS304. (2) Because there is no need to add nickel, molybdenum, even if the price of these two metals will not be affected.
4. Thermal conductivity advantage
Thermal conductivity is about 30% higher than SUS304, so in the application of cooking products. More time and energy saving, coupled with its good thermal conductivity, used on the induction cooker can better show the advantages of the material, the use of better results.
5, stainless steel TTS443M material properties: matrix pore corrosion resistance index of 300mv, comparable to 304 stainless steel, high thermal stability, good tensile properties.
6, use
6.1 Kitchenware: cutlery, dishwasher sinks, cooking stoves, range hoods, barbecue grills, kitchen equipment
6.2 Electrical appliances: microwave ovens, rice cookers, dishwashers, freezers
6.3 Transportation vehicles, machinery: refrigerated containers, automotive exhaust system parts
6.4 Construction: roofing, architectural hardware, Elevators, electric escalators, decorative tubes, curtain rails, interior and exterior building accessories.
7. Stability of resources, quality, and cost